Loom shuttle



Jan. 20, 1942. J. J. KAUFMANN, JR 2,270,821

LOOM SHUTTLE Filed June 17, 1940 Patented Jan. 20, 1942 UNITED STATES PATENT OFFICE.

LOOM SHUTTLE Application June 17, 1940, Serial No. 340,868

10 Claims.

This invention relates to loom shuttles, and more particularly to an improved arrangement in such shuttles of the means for gripping the bobbin.

With many of the loom shuttles now available, particularly those which are used in automatic replenishing looms, the flexing of the spring jaws produces a fatigue effect. This is apparently due to the repeated flexing of the jaws upon the insertion of bobbins, as well as to the vibrations set up in the jaws.

It is, therefore, an object of the present invention to provide a loom shuttle having spring gripping jaws so mounted and damped as to reduce the vibration and the fatigue effect therein.

It is a further object of the present invention to provide an improved loom shuttle in which the spring gripping jaws will accommodate themselves-more readily for the introduction of the filling carrier or bobbin.

It is a further object of the present invention to provide a loom shuttle with damped spring jaws so constructed and arranged that the damping means does not interfere with the assembly of the shuttle.

Other objects and features of the invention will be apparent from the annexed specincation and claims.

The nature and characteristic features of the invention will be more readily understood from the following description, taken in connection with the accompanying drawing, forming part hereof, in which:

Figure 1 is a fragmentary View of a shuttle in accordance with the present invention partly in elevation and partly in vertical central section and showing the internal construction thereof;

Fig. 2 is a fragmentary plan view of the shuttle shown in Fig. 1, parts being broken away to show vthe internal construction and arrangement of the parts thereof;

Fig. 3 is a View in perspective of spring jaws having damping or resilient mounting structure applied thereto in accordance with the present invention; and

Fig. 4 is a view in perspective of a guard or shank cover which may be used with the spring jaws illustrated in Fig. 3, the cover also being provided with damping or resilient mounting structure.

It will, of course, be understood that the description and drawing herein are illustrative merely, and that various modifications and changes may be made in the structure disclosed without departing from the spirit of the invention.

Referring to the drawing, in the particular embodiment of the invention therein illustrated, the shuttle I0 has the customary opening for the reception of the filling carrier or bobbin (not shown) and a longitudinal recess formed in the body portion of the shuttle at one end thereof for receiving the holder for the filling carrier. The holder preferably includes a pair of spring jaw members for gripping engagement with one end of the iilling carrier. In the particular construction shown the holder for the filling carrier is preferably formed from a strip of spring steel and includes an elongated U-shaped shank portion II, with intermediate curved or spread portions i2 connected thereto and terminates in a pair of opposed gripping jaws I3 and I4. The gripping jaws I3 and I4 are preferably formed in the well known manner with the usual grooves I5 on the inner and opposed faces thereof for engagement with the customary rings on the butt end of the bobbin (not shown).

A guard or shank cover IB is also preferably provided and is formed in the well known manner. The particular guard or shank cover I6 shown in the drawing includes a flat horizontally disposed portion I1 having a counter-sunk hole I8 so that a screw I9 may be inserted therethrough and into the body portion of the shuttle for holding the guard or shank cover I6 in position. The guard I6 also includes the usual inclined portion 20 for guiding the bobbin into position for insertion of a new bobbin when the supply of lling on the bobbin then in place becomes exhausted. The guard or shank cover I5 also preferably includes a vertically disposed portion 2l extending from the inclined portion 20 and a horizontal portion 22. The guard I6 may be formed of a plurality of pieces of material,

Asuitably united by welding or in any other preferred manner, or may consist of a single piece of strip material bent to the shape indicated.

A spreader 23 of any preferred form, may, if desired, also be provided and interposed between the holder and the guard I6 for spacing the shank portion II of the jaw members. A bolt 25 may be provided which extends laterally through the shuttle body and through an opening 26 in the shank portions of the jaw member for holding the shank I I in position.

In accordance with the present invention, provision is made for absorbing the shocks imparted to the jaws `I3 and I4 upon the insertion of a new bobbin and preferably includes a strip or layer 30 of resilient or yieldable material, such as rubber, which extends along the outer face of the intermediate curved or spread portions I2 of the jaw members, along the outer face of the shank portions II, and around the end of the shank I'I as illustrated particularly in Figs. 2 and 3. The strip or layer of resilient or yieldable material may be secured to the face portions of the holder with which it is in contact in any desired manner, such for example as by the use of a suitable adhesive, or when rubber is used by vulcani- Zation.

To facilitate the insertion of the shank I I in the recess within the shuttle body, a thin strip or facing of sheet metal 3l, may be provided for the purpose of covering the outer surface of the resilient rubber strip 3l), as illustrated in Fig. 3. The facing 3| may be secured to the layer of resilient material in the manner heretofore indicated. The strip of resilient or yieldable material 3 provides for damping of shocks received by the jaws I3 and I4 upon the insertion of a new bobbin and provides a resilient support for the holder.

It is also advisable to provide for damping of vertical shocks and for a further resilient mounting and for this purpose the guard or shank cover IB is provided with a strip or layer 33 of resilient or yieldable material, such as rubber, disposed along the lower face of the horizontal portion 22.

An outer covering or facing strip 313 of thin sheet metal is provided. The resilient material 33 may be secured in the manner heretofore indicated, either to the lower face of the horizontal portion 22 or to the facing 34 or both.

Another strip or layer 35 of resilient or yieldable material, such as rubber, is disposed along the upper face of the horizontal portion 22 and an outer covering or facing strip 36 of thin sheet metal is provided. The resilient material 35 may be secured, in the manner heretofore indicated, either to the upper face of the horizontal portion 22 or to the facing 33 or both.

The facing strip 34 provides for contact with the wall portion of the shuttle body and the facing strip 36 provides for engagement by the lower part of the spreader 23 and the lower edge of the shank II.

The provision of the resilient support heretofore referred to permits freedom of movement of the holder, within limits, to accommodate itself to receive an incoming bobbin. As soon as the bobbin has reached its normal position the holder, under the influence of the resilient support, alines itself in its normal undeiiected position.

I claim:

1. A loom shuttle comprising a shuttle body, a member mounted therein for relatively holding a filling carrier, said member including spring jaws and a shank portion for connecting said jaws positioned in said body, and yieldable non-metallic shock absorbing material interposed between said shank portion and said shuttle body.

2. A loom shuttle comprising a shuttle body, a member mounted therein for releasably holding a filling carrier, said member including spring jaws and a shank portion for connecting said jaws positioned in said body, and a mounting of yieldable non-metallic material interposed between said shank portion and said shuttle body.

3. A loom shuttle comprising a shuttle body, a member mounted therein for releasably holding a filling carrier, said member including spring jaws and a shank portion, a layer of nonmetallic yieldable material interposed between said shank portion and said shuttle body for resiliently mounting said shank portion in said body, and a thin facing of sheet material between said yieldable layer and said shuttle body.

4. A loom shuttle comprising a shuttle body, a member mounted therein for releasably holding a lling carrier, said member including spring jaws and a shank portion, and means consisting of yieldable non-metallic material interposed between said shank portion and said shuttle body for resiliently mounting said shank portion in said shuttle body.

5. A loom shuttle comprising a shuttle body, opposed spring jaws therein, a shank portion connecting said jaws, and resilient means for mounting said shank portion in said body, said means including a layer of yieldable non-metallic material disposed between said shank portion and said shuttle body.

6. A loom shuttle comprising a shuttle body, bobbin holding jaws therein, a shank portion connecting said jaws, a shank cover extending above and below said shank portion, and means for resiliently mounting said shank portion, and a layer of yieldable non-metallic material disposed between said shank portion and said shank COVel.

7. A loom shuttle comprising a shuttle body, bobbin holding jaws therein, a shank portion connecting said jaws, a shank cover extending above and below said shank portion, and means for resiliently mounting said shank portion with respect to said shank cover, said means including a layer of yielding non-metallic. material disposed between said shank portion and said shank cover.

8. A loom shuttle comprising a shuttle body, bobbin holding jaws therein, a shank portion connecting said jaws, a shank cover mounted in said body and extending above and below said shank portion, and a layer of yieldable nonmetallic material disposed between said shank cover and said shuttle body.

9. A loom shuttle comprising a shuttle body, bobbin holding jaws therein, a shank portion connecting said jaws, a shank cover mounted in said body and extending above and below said shank portion, a layer of yielding non-metallic material disposed between said shank cover and said shuttle body, and a thin facing of sheet material between said layer and said shuttle body.

10. A loom shuttle having a shuttle body, bobbin holding jaws therein, a shank connecting said jaws, a shank cover mounted in said body and extending above and below said shank portion, and yieldable non-metallic material disposed between said shank cover and said shuttle body and between said shank and said shank cover.

JOHN J. KAUFMANN, JR. 

